How often do you guys end combos with bf4? I've been doing, for example, b2,1~exbf2, njp, j3~bf4 mainly midscreen. It's like 32%, not the most damaging, but I've been doing it because its super plus on block, they fall in perfect spacing for either d+f+1, whip trip, b2, or b3 (prolly forward dash d3 too but haven't tried that out), and it's a hard knock down, so they cannot roll away from you. So they have to take whatever you throw out at them unless the wakeup, which you always had to worry about anyways, or delay their get up.
I've been playing around with ending things in hard knock downs because as great as ending with df1, bf2, or db2 are in combos, they can still roll out of the way and get full screen quicker on us.